(19)

(11)

EP 4 798 390 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24817706.5 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  B21D 26/021(2011.01) B21D 26/059(2011.01) B21D 26/027(2011.01) B21D 51/02(2006.01) (52) Cooperative Patent Classification (CPC): B21D 26/059; B21D 26/027; B21D 26/021; B21D 51/02 (86) International application number: PCT/IB2024/060508 (87) International publication number: WO 2025/088556 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 26.10.2023 PL 44650623 (71) Applicant: ZIETA PROZESSDESIGN SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA 51-610 Wroclaw (PL)	(72) Inventor: ZI TA, Oskar 51-610 Wroc aw (PL) (74) Representative: JWP Patent & Trademark Attorneys  ul. Minska 75 03-828 Warszawa 03-828 Warszawa (PL)